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FOOTNOTES:
Our minds compute scale based on reference to background and
surroundings. Against the backdrop of an infinite void, such as the
sky, scale is literally impossible to judge. The best any person can
do is recognize a known object, and remember the size of it. If the
distance to the object is known, then it is possible to use two
seperate viewpoints to compute scale, but poor Heliotrope does not
have a partner out there in the clouds, and in any case, she has no
way to know exact distance. Misjudging scale is easy in such a case.

For
this reason, I always reject any size estimate of any unknown object
seen in the sky, guessed at by any person. Unless the skyborne object
is known, no person can claim to know the size of it with no
references to measure against.